Specification

Keeps water out,
yet allows water
vapor to escape
MicroTech Coating
Resists Air
Pentration to
Improve Energy
Efficiency
A Weather Barrier that is Engineered
for Climate
®
As with all of our exterior products, HardieWrap weather
barrier is engineered for climate. In reviewing the climatic
factors that affect weather barrier performance, we
determined the predominant factors that affect weather
barrier performance are temperature and humidity. The
temperature and humidity differences align with the two
HardieZone
®
regions. So we created two weather barriers:
one engineered for cold/wet climates and the other
engineered for hot/humid climates. HardieWrap weather
barrier is offered in two high performing products to meet
the needs of HZ5
®
and HZ10
®
regions.**
** While James Hardie recommends perm rating for each of the HardieZone regions, the warranty is not tied to the geography
Just like siding, a better weather barrier starts with better
material. HardieWrap weather barrier is a premium,
non-woven, water-resistive barrier. It contains a unique
MicroTech
™
coating that provides a better balance of water
resistance and water vapor permeability, reducing water
intrusion while releasing moisture vapor from inside to dry
out the wall cavity. HardieWrap weather barrier also delivers
superior air resistance to reduce energy loss. This 11-mil thick
sheet provides better strength than competitive products.
HardieWrap
®
Weather Barrier Provides a Better
Balance of Moisture Management
For cold/wet climates of the Northern
US, James Hardie provides a 25 perm
product. This permeability level keeps
water out, yet allows water vapor to
escape. This product is labeled with the
green logo:
In hot/humid climates of the South,
a 15 perm product keeps humid air
out, while still allowing water vapor to
escape. This product is labeled with the
black logo:
2